Coupling



Junes, 1925. 1,541,139

. J. HAYDEN ET AL COUPLI NGA Original Filed Sept. 14, 1923 EEE-1 Patented .lune 9, 1925.

UNITED` STATES FFICE.

JOSEPH BENNETT HAYDEN, JOHN MORRIS, AND HARRY C. GEORGE, OF GREENSBURG,

PENNSYLVANIA.

COUPLING.-

Original application led September 14, 1923, Serial No. 662,674. Divided and this application led as will enable others skilled in the art towhich it appertains to make and use the same.`

This invention relates to improvements in couplings, designed primarily for connecting high pressure grease hoses to projecting nipples on machine parts, so'that heavy grease may be forced through these nipples to lubricate the machine.

It is theobject of the invention t provide a simple and inexpensive couplin which may be quickly and easily applie or detached, and willestablish an el'ective grease-tight connection.

The present application forms a division of our pending U. S.A application, .Serial No. 662,674, filed September 14, 1923.

With the object above set forthf in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing.

Figure 1 is a side elevation showing a `coupling constructed in accordance with our invention.

Figure 2 is an enlarged longitudinal sectional view, showing the coupling engaged with a nipple.

Figure 3 is a detail. sectional view of the 'coupling removed from the nipple.

Figures 4 *and- 5 are'transverse sections on lines 4r4 and 5-5 of Fig. 2.

' Figure 6 is a perspective view showing a portion of the coupling and a nipple in juxtaposition. f

Inv the drawing above briefly described, the numeral 1 designates a nipple,rcom municating with a grease port 2 of a ma chine part 3, said nipple being provided with a pair of opposed, flat lugs 4 at a point spaced inwardly from its outer end, lor engagement with the coupling described below. The outer end of the nipple 1 is lol-mcd with an inwardly extending valve March 27, 19241 Serial No. 702,372.

seat 5 cofacting with a ball valve 6 vwhich 1s normally seated by a coiled spring 7 and the inner end of said nipple is formed with an inwardly extending flange 8 against which the spring thrusts. v

The numeral 9 designates a high pressure grease supply hose which is usually formed of metal or at least metal covered. At the outlet end of this hose, an elongated tubular lmner sleeve or casing 10 'is provided, said casing having a relatively long and large 1nternal diameter 11 at its rear end, a much smaller and short internal diameter l2 at its front end, and an intermediate internal dlameter 13 between the diameters 11 and 12, tlns formation serving to provide a shoulder 14 at the inner end of the di- ',ameter 12, and asimilar shoulder 15 at the `The hose 9 is preferably soldered in the larger diameter 11 and the shoulder 15 limits the insertion of this hose. The diameter 12 is intended to receive the Outer end of the nipple 1 as shown in Fig. 2, and a'sprlng-pressed packing is provided in the diameter 18 to abut the end of the nipple. This packing preferably includes a flexible gasket 16 which, when the coupling is removed from the nipple, abuts the shoulder 14 as shown in Fig. 3. Contacting with the inner side of the gasket 16, a cup washer 17 has been shown, and a coiled compression spring 18 has its ends disposed in contact with the Washer 17 and the end of the hose 9.

Rotatably surrmnding the tubular casing 10, is a sleeve 19, said sleeve rojeeting forwardly from the front end ofpsaid casing 10 and being of an internal diameter to receive, within its' interior, the lugs 4.-

The sleeve 19- is provided with a closed front end 20 having a transverse slot 21 through which the nipple 1 and the lugs 4 are insertible, when said sleeve is turned to aline the slot 21 with said lugs. The

' space between the inner side of the wall 2O and the casing 12ml; greater than the thickness of the lugs 4, so that when applyin or releasing the coupling, it may be force inwardly until said lugs strike theend of the casing, thus freeing the wall 20 of all contact with said lugs and permitting said casing to be turned with case to an operative or inoperative position1 "lo'mount the sleeve 19 rotatably upon the tubular casing 10, we prefer to provide the latter with a peripheral groove 22, and to pass studs 23 inwardly through the sleeve for reception in said groove.

By providing the construction shown and described, or a substantial equivalent thereof, a coupling is provided which may be quickly and easily applied or released, and will establish a tight connection with the nipple when in use, to prevent any leakage of grease. Attention maybe directed to the fact tha'tvnormally, the spring 18 seats the gasket or packing washer 16 against the seat or shoulder 14 which is entirely -independent of the sleeve 19. Thus, the latter is freely and easily rotatable upon the inner sleeve or casing 10 so that it may readily be turned to aline the slot 21 with the lugs 4, when applying the device to the nipple 1.

Excellent results may be obtained from the details disclosed, and they may therefore be followed if desired, but within the scope of the invention as claimed numerous minor changes may be made.

We cla1m:- 1. A coupling for connection with a mpple having lateral lugs spaced inwardly from its end; saidcoupling comprising a tubular casing adapted at its rear end to be securedto a hose and open-at its front or outer end for reception of the abovenamed nipple, said outer end of the casing being adapted to abut the lugs of the nipple to limit its insertion into the casing, a spring-pressed packing within said tubular casing to yieldably press against the nipple and establish `a tight connection therewith, a tubular sleeve rotatable and non-slidable on said tubular casing, said sleeve having a front end extended beyond said open end of said tubular casing and of an internal diameter to receive within its interior the lateral lugs on the above-named nipple, said front end of said sleeve having an end wallformed with a transverse slot through which the aforementioned nipple and lugs are insertible, the inner side of said end wall being adapted to engage the lugs when the sleeve is turned on the, casing and being spaced outwardly from the outer end of said casing a distance slightly greater than the thickness of the lugs, permitting said end Wall of the sleeve to be entirely freed of contact with the lugs when turning said sleeve.

2. A coupling for connection with a nipple having lateral lugs spaced inwardly from its outer end; said coupling comprising an elongated tubular casing of uniform external diameter throughout its length,l

said casing having a small short 4internal bore at its front end, a large elongated internal bore at its rear end, and an intermediate bore between said small andlarge bores, shoulders being formed at the -juncture of the three bores, the larger bore of said casing being adapted to receive a conduit intended to abut one of said shoulders, a gasket within the intermediate bore of the casing normally abutting the other shoulder, a coiled spring in the casing to normally force said washer forwardly against the foremost shoulder, and an elongated tubular sleeve rotatably and non-slidably surrounding said casing, the front end of said sleeve projecting forwardly from said casing and being of an internal diameter to receive the lugs of the above-named nipple when the end of such nipple is forced into the small bore at the front end of the casing, said sleeve having a front end wall formed with a transverse slot through which the nipple and its lugs are insertible, the inner side of said wall being spaced from the front extremity of the aforesaid casing a distance slightly greater than the. thickness of the lugs and being adapted to engage said lugs when the sleeve is turned on the casing.

In testimony whereof1 we have hereunto afiixed our signatures.

JOSEPH BENNETT HAYDEN. JOI-IN MORRIS. HARRY O. GEORGE. 

